package br.com.petGoHome.QrCode;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class GerarQRCode {
	
	public static void createQRImage(File qrFile, String qrCodeText, int size,
			   String fileType) throws WriterException, IOException {
			  // Create the ByteMatrix for the QR-Code that encodes the given String
			  Hashtable hintMap = new Hashtable();
			  hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
			  QRCodeWriter qrCodeWriter = new QRCodeWriter();
			  BitMatrix byteMatrix = qrCodeWriter.encode(qrCodeText,
			    BarcodeFormat.QR_CODE, size, size, hintMap);
			  // Make the BufferedImage that are to hold the QRCode
			  int matrixWidth = byteMatrix.getWidth();
			  BufferedImage image = new BufferedImage(matrixWidth, matrixWidth,
			    BufferedImage.TYPE_INT_RGB);
			  image.createGraphics();

			  Graphics2D graphics = (Graphics2D) image.getGraphics();
			  graphics.setColor(Color.WHITE);
			  graphics.fillRect(0, 0, matrixWidth, matrixWidth);
			  // Paint and save the image using the ByteMatrix
			  graphics.setColor(Color.BLACK);

			  for (int i = 0; i < matrixWidth; i++) {
			   for (int j = 0; j < matrixWidth; j++) {
			    if (byteMatrix.get(i, j)) {
			     graphics.fillRect(i, j, 1, 1);
			    }
			   }
			  }
			  ImageIO.write(image, fileType, qrFile);
			
			 }

}
